html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

nav {
    width: 100%;
    display: flex;
    background-color: #000;
    height: 18px;
    color: #bfbfbf;
}

.nav-content {
    width: 1200px;
    display: flex;
    margin: 0 auto;
    height: 100%;
}

.logo img {
    width: 257px;
    height: 103px;
}

.nav-msg {
    display: flex;
    align-items: center;
}

.nav-msg-1 {
    font-family: SimHei;
    font-size: 16px;
}

.nav-msg-2 {
    margin-left: 630px;
    font-family: SimHei;
    font-size: 14px;
}

.nav-span {
    cursor: pointer;
    color: #ff6600;
}

header {

    display: flex;
    justify-content: center;
    align-items: center;

}

.header {
    position: relative;
    width: 685px;
    height: 54px;
}

.welcome {
    position: absolute;
    left: 15px;
    top: 25px;
    font-family: SimHei;
    font-size: 30px;
    color: #666666;
}

.login {
    width: 100%;
    height: 463px;
}

.background {
    position: fixed;
    margin-top: 29px;
    width: 100%;
}

.background>img {
    width: 100%;
    height: 100%;
}

.tabs {
    position: fixed;
    /* 添加定位属性 */
    top: 40%;
    left: 65%;
    transform: translate(-50%, -50%);
    /* 居中对齐 */
    width: 350px;
    height: 350px;
    background-color: #ffffff;
    z-index: 1;
}

.title {
    height: 55px;
    width: 349px;
    border: 1px solid #eee;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.active {
    color: #ff6600;
}

.tabs-content {
    display: none;
}

.show {
    display: block;
}

.tabs-content img {
    margin-left: 25px;
    margin-top: 20px;
}

.tabs-content-inputs {
    width: 100%;
    height: 292px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}

.tabs-content-inputs>input {
    width: 289px;
    height: 38px;
    outline: none;
    border: 1px solid #bfbfbf;
}

.tabs-content-inputs>:first-child {
    margin-top: 40px;
}

.tabs-msg {
    width: 289px;
    height: 16px;
    color: #878787;
    display: flex;
    justify-content: space-between;
}

.msg {
    display: flex;
}

.msg>input[type='checkbox'] {
    width: 16px;
    height: 16px;
}

.submit {
    width: 289px;
    height: 38px;
    background: #ff6700;
    color: #ffffff;
    border: none;
    font-size: 24px;
}

.footer {
    width: 100%;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    border-top: 3px solid #e6e6e6;
}

.point {
    width: 18px;
    height: 18px;
    background: #e4394c;
    color: #fff;
    text-align: center;
    line-height: 18px;
    border-radius: 50%;
}

.msg3 {
    margin-left: 5px;
    color: #ff6700;
}